griffon/util/GriffonExceptionHandler.java

`GriffonExceptionHandler.java`
`01 /* 02 * Copyright 2008-2012 the original author or authors. 03 * 04 * Licensed under the Apache License, Version 2.0 (the "License"); 05 * you may not use this file except in compliance with the License. 06 * You may obtain a copy of the License at 07 * 08 * http://www.apache.org/licenses/LICENSE-2.0 09 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package griffon.util; 17 18 import griffon.core.GriffonApplication; 19 import org.codehaus.groovy.runtime.StackTraceUtils; 20 import org.slf4j.Logger; 21 import org.slf4j.LoggerFactory; 22 23 import java.util.Map; 24 25 import static java.util.Arrays.asList; 26 27 /** 28 * Catches and sanitizes all uncaught exceptions. 29 * 30 * @author Danno Ferrin 31 * @author Andres Almiray 32 */ 33 public class GriffonExceptionHandler implements Thread.UncaughtExceptionHandler { 34 /** 35 * "griffon.full.stacktrace" 36 */ 37 public static final String GRIFFON_FULL_STACKTRACE = "griffon.full.stacktrace"; 38 /** 39 * "griffon.exception.output" 40 */ 41 public static final String GRIFFON_EXCEPTION_OUTPUT = "griffon.exception.output"; 42 43 private static final Logger LOG = LoggerFactory.getLogger(GriffonExceptionHandler.class); 44 private static final String[] CONFIG_OPTIONS = { 45 GRIFFON_FULL_STACKTRACE, 46 GRIFFON_EXCEPTION_OUTPUT 47 }; 48 49 public void uncaughtException(Thread t, Throwable e) { 50 handle(e); 51 } 52 53 public void handle(Throwable throwable) { 54 try { 55 sanitize(throwable); 56 if (isOutputEnabled()) throwable.printStackTrace(System.err); 57 GriffonApplication app = ApplicationHolder.getApplication(); 58 if (app != null) { 59 LOG.error("Uncaught Exception", throwable); 60 app.event("Uncaught" + GriffonNameUtils.getShortName(throwable.getClass()), asList(throwable)); 61 app.event(GriffonApplication.Event.UNCAUGHT_EXCEPTION_THROWN.getName(), asList(throwable)); 62 } 63 } catch (Throwable t) { 64 sanitize(t); 65 if (isOutputEnabled()) t.printStackTrace(System.err); 66 LOG.error("An error occurred while handling uncaught exception " + throwable, t); 67 } 68 } 69 70 public static Throwable sanitize(Throwable throwable) { 71 try { 72 if (!Boolean.getBoolean(GRIFFON_FULL_STACKTRACE)) StackTraceUtils.deepSanitize(throwable); 73 } catch (Throwable t) { 74 // don't let the exception get thrown out, will cause infinite looping! 75 } 76 return throwable; 77 } 78 79 public static boolean isOutputEnabled() { 80 return Boolean.getBoolean(GRIFFON_EXCEPTION_OUTPUT); 81 } 82 83 public static void configure(Map config) { 84 for (String option : CONFIG_OPTIONS) { 85 if (config.containsKey(option)) { 86 System.setProperty(option, String.valueOf(config.get(option))); 87 } 88 } 89 } 90 91 public static void registerExceptionHandler() { 92 Thread.setDefaultUncaughtExceptionHandler(new GriffonExceptionHandler()); 93 System.setProperty("sun.awt.exception.handler", GriffonExceptionHandler.class.getName()); 94 } 95 }`